The NFL is a microcosm of how philosopher Thomas Hobbes described life without government: it's nasty, brutish, and short.
You know that dude used Colin Kaepernick in Week 13.
The NFL is nasty in that league winners can turn to dust in the span of just a few plays. It's brutish in that one simple hit can radically change a player's value, for better or for worse. And it's short in that our sample is just 16 games, meaning all of these fluctuations happen without any time to wait and let things play out.